CN110815063A - Reinforced grinding equipment for processing bearing outer ring raceway - Google Patents
Reinforced grinding equipment for processing bearing outer ring raceway Download PDFInfo
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- CN110815063A CN110815063A CN201911109528.1A CN201911109528A CN110815063A CN 110815063 A CN110815063 A CN 110815063A CN 201911109528 A CN201911109528 A CN 201911109528A CN 110815063 A CN110815063 A CN 110815063A
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- processing
- box body
- outer ring
- separation
- bearing outer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a reinforced grinding device for processing a raceway of an outer ring of a bearing, which comprises a reinforced processing module and a circulating feeding module, wherein the reinforced processing module comprises a mixing hopper, a processing box body and a reinforced processing mechanism, the reinforced processing mechanism is arranged in the processing box body and comprises a clamping mechanism and a circumferential injection mechanism, and the circumferential injection mechanism comprises a circumferential spray head and a rotary driving structure for driving the circumferential spray head to rotate; the circulation feed module comprises a mixing conveying pipeline and a mixing power mechanism, the mixing power mechanism comprises a feeding pipeline, a feeding hopper, a discharging pipeline, two high-pressure pumping cylinders and a switching driving mechanism, the high-pressure pumping cylinders comprise a material storage cylinder body and a pushing hydraulic cylinder, and a pushing piston of the pushing hydraulic cylinder extends into an inner cavity of the material storage cylinder body. The reinforced grinding equipment has small pressure loss in the conveying process, effectively ensures the processing quality of the raceway of the bearing outer ring, and is suitable for processing the raceway of the miniature bearing outer ring.
Description
Technical Field
The invention relates to a reinforced grinding processing device, in particular to reinforced grinding equipment for processing a raceway of a bearing outer ring.
Background
With the rapid development of modern industrial technologies, various industries have increasingly high requirements on the safe and reliable performance and the service life of mechanical equipment, such as automobiles, robots, internal combustion engines, ships, metallurgical machinery, coal mine machinery and the like; among them, the bearing is used as an indispensable rotating bearing body, widely applied to modern mechanical equipment, and is called as a mechanical joint by the mechanical industry. The failure of the bearing not only causes property loss, but also can cause a great deal of casualties, so that the improvement of the fatigue life of the bearing is of great significance.
A conventional strengthening grinding machine employs a direct pressurization type machining method, for example, a bearing strengthening grinding machine disclosed in application publication No. CN104942664A, which directly mixes a strengthening abrasive and a strengthening abrasive liquid by high-pressure gas and then conveys the mixture to a nozzle to machine a workpiece. Although the reinforced grinding machine can automatically complete reinforced processing and has the advantages of simple structure, convenient control and the like, the following defects still exist:
1. in the grinding machine, high-speed spraying is mainly carried out by means of high-pressure gas, and the grinding material is firstly sucked into the high-pressure gas by generating huge negative pressure at the grinding material placing position, so that the grinding material is sprayed to the raceway of the bearing from the spray head at high speed under the propelling of the high-pressure gas. In the process of pipeline transportation, the loss ratio of pressure of high-pressure gas is large, so that the pressure at the tail end of transportation is far smaller than the preset pressure output by the head end, a large amount of energy is wasted, and the processing effect of a bearing raceway cannot meet the preset requirement.
2. This approach does not allow the raceway of the bearing outer ring to be machined, particularly the raceway of the miniature bearing outer ring.
Disclosure of Invention
The invention aims to overcome the existing problems and provides reinforced grinding equipment for machining a raceway of a bearing outer ring, which has small pressure loss in the conveying process, can effectively ensure the machining quality of the raceway of the bearing outer ring and is suitable for machining the raceway of a miniature bearing outer ring.
The purpose of the invention is realized by the following technical scheme:
a reinforced grinding device for processing a raceway of an outer ring of a bearing comprises a reinforced processing module and a circulating feeding module, wherein the reinforced processing module comprises a mixing hopper, a processing box body and a reinforced processing mechanism, and the mixing hopper is arranged on and communicated with one side of the processing box body; the strengthening processing mechanism is arranged in the processing box body through a fixed connecting structure;
the reinforced machining mechanism comprises a clamping mechanism for clamping and fixing the bearing outer ring and a circumferential spraying mechanism for spraying mixed abrasive to a raceway of the bearing outer ring, the circumferential spraying mechanism comprises a circumferential sprayer, the circumferential sprayer comprises a feeding end and a distributing end, and the distributing end is arranged in the center of the clamped bearing outer ring; the inner cavity of the feeding end forms a feeding channel, one end of the feeding channel is communicated with the tail end of the circulating feeding module, and the other end of the feeding channel is communicated with the material distributing end; the inner part of the distributing end is provided with a plurality of spraying channels which are arranged along the circumferential direction, each spraying channel comprises a direct current part and a rotating part, the direct current parts are communicated between the feeding channels and the rotating parts, and the rotating parts incline along the circumferential direction while extending outwards;
the circular feeding module comprises a mixing conveying pipeline and a mixing power mechanism, one end of the mixing conveying pipeline is connected to the bottom of the processing box body, and the other end of the mixing conveying pipeline is communicated with a feeding channel of the circumferential spray head; the hybrid power mechanism is arranged at one end of the hybrid conveying pipeline close to the bottom of the processing box body; the high-pressure pumping cylinders comprise a material storage cylinder body for temporarily storing mixed abrasive and a pushing hydraulic cylinder for pushing the mixed abrasive in the material storage cylinder body out at high speed, the tail end of the material storage cylinder body extends into the feeding hopper, one end of the feeding pipeline is communicated with the mixing and conveying pipeline, and the other end of the feeding pipeline extends into the feeding hopper; one end of the discharge pipeline extends into the feeding hopper, and the other end of the discharge pipeline is communicated with the mixing and conveying pipeline; and a pushing piston of the pushing hydraulic cylinder extends into an inner cavity of the material storage cylinder body and is matched with the wall of the inner cavity of the material storage cylinder body.
The working principle of the reinforced grinding equipment is as follows:
when the device works, the bearing outer ring is fixed through the clamping mechanism, so that the bearing outer ring is positioned on the outer side of the distributing end of the circumferential sprayer, and the outer ring raceway of the bearing outer ring is opposite to the outlet of the spraying channel of the distributing end; putting the mixed abrasive (steel balls and abrasive powder) on a mixing hopper, and opening a switch of the mixing hopper to enable the mixed abrasive to fall to the bottom of a processing box body; and then starting a mixing power mechanism to rapidly convey the mixed abrasive to a circumferential spray head. After the high-speed mixed abrasive material is sent the circumference shower nozzle, shunt to a plurality of injection channels of dividing the material end through the pan feeding passageway, and then spray and go out from a plurality of injection channels that have different orientations respectively, because the bearing outer lane is located the outside of the branch material end of circumference shower nozzle to make the mixed abrasive material homoenergetic that each injection channel high-speed sprayed strike bearing outer lane raceway. Meanwhile, the spraying channel is provided with the rotating part which extends outwards and is inclined along the circumferential direction, so that when mixed abrasive enters the rotating part through the direct current part of the spraying channel, the mixed abrasive can push the material distribution end to rotate along the opposite circumferential direction of the inclination of the rotating part, the mixed abrasive sprayed in the original fixed direction can be swept along the circumferential direction by 360 degrees, and the processing effect of the raceway of the outer ring of the bearing can be more uniform.
In the process, after the hybrid mechanism is started, the discharge pipeline is communicated with one high-pressure pumping cylinder, the pushing piston in the material storage cylinder body in the other high-pressure pumping cylinder moves in the opposite direction of pushing, and the mixed abrasive is sucked into the material storage cylinder body through the feeding pipeline. After this stock cylinder body is filled with mixed abrasive, switch actuating mechanism drive ejection of compact pipeline and this stock cylinder body intercommunication, under the drive of propelling movement pneumatic cylinder, the propelling movement piston is gone out the mixed abrasive propelling movement in this stock cylinder body fast, make mixed abrasive obtain huge kinetic energy, thereby can be at a high speed along mixing the pipeline forward movement, and from circumference shower nozzle blowout, violently strike on the raceway of bearing, make the surface of bearing raceway obtain great residual compressive stress, be favorable to improving the mechanical properties and the life-span of bearing. Meanwhile, a feeding opening of the other material storage cylinder body is opened in the feeding hopper, a pushing piston in the material storage cylinder body moves in the opposite direction of pushing, mixed abrasive is filled into the other material storage cylinder body, and feeding preparation is made. Wherein, with the switching constantly of ejection of compact pipeline, two high-pressure pumping jars are in turn, are in turn with mixing abrasive material forward propelling movement to form highly compressed, continuous jet, constantly circulate and carry mixing abrasive material, until accomplishing intensive processing.
The invention also comprises a separation and recovery module, wherein the separation and recovery module comprises a cleaning and separation module for classifying and recovering the mixed grinding material and a drying module for drying the classified steel balls.
Preferably, the cleaning and separating module comprises a separating mechanism and a separating mechanism, the separating mechanism comprises a separating box body and a plurality of separating plates arranged in the separating box body, and the plurality of separating plates are arranged on two opposite inner walls of the separating box body in an up-and-down staggered manner; the head end of the separation plate is fixedly connected to the inner wall of the separation box body, and the tail end of the separation plate obliquely extends downwards to a position exceeding the vertical central line of the separation box body; the position of the intersection point of the tail end extension line of the upper separation plate and the inner wall of the separation box body is higher than the position of the connection point of the head end of the lower adjacent separation plate and the inner wall of the separation box body; the separation box body is arranged below the processing box body, the top of the separation box body is provided with a recovery pipeline communicated with an opening at the bottom of the processing box body and a cleaning pipeline used for introducing cleaning liquid, and the bottom of the separation box body is provided with a discharge hole; a recovery switch is arranged on the recovery pipeline;
the separation mechanism comprises a separation box body and a separation screen, the separation box body is arranged below the discharge port, and the separation screen is obliquely arranged at the top of the separation box body; wherein the mesh size of the separation screen is smaller than the size of steel balls in the mixed grinding material and larger than the size of grinding powder in the mixed grinding material. Through the structure, after the completion intensive processing, the whole bottoms that collect at the processing box of mixed abrasive material, open the recovery switch of recovery pipeline, make mixed abrasive material fall to and break away from the box, wherein, because a plurality of break away from the board down set up aslope on two relative inner walls that break away from in the box, so mixed abrasive material can be in proper order from the relative crisscross falling of "beating" on the board that breaks away from that sets up, here "beating" in-process, the steel ball can strike on breaking away from the board in proper order, steel ball self can constantly produce the vibration like this, thereby shake the abrasive powder of adhesion and fall. Not only here, because the position that the intersection point of the terminal extension line of the break-away plate that lies in the top and the inner wall of the break-away box is located is higher than the position that lies in the head end of the adjacent break-away plate in below and breaks away from the tie point of box inner wall, and the terminal slope of break-away plate extends down to the position that exceeds the vertical center line that breaks away from the box, can guarantee all to have enough long roll distance on every break-away plate like this, so that the steel ball can carry out abundant roll, from top to bottom, the steel ball rolls off on a plurality of break-away from the board in proper order, and in this process, the ground powder can break away from the steel ball gradually. Meanwhile, cleaning fluid is introduced into a cleaning pipeline at the top of the separation box body to clean the mixed abrasive falling from the separation box body, so that the separation of the steel balls and the abrasive powder is further accelerated; in addition, the separated grinding powder can be washed off from the separating plate and enters the separating box body through the meshes of the separating screen.
Furthermore, a baffle plate which is obliquely arranged is arranged in the separation box body.
Preferably, the drying module comprises a drying coil for introducing high-frequency current to dry the steel balls, a guide plate for guiding the steel balls to move downwards and a recovery box for collecting the steel balls, one end of the guide plate extends to a steel ball discharging end of the cleaning and separating module, and the other end of the guide plate extends into the recovery box; the drying coil is wound around the outside of the guide panel along the extending direction of the guide panel. Through above-mentioned structure, not only can dry the steel ball fast, avoid the steel ball to rust, still have advantages such as simple structure.
Further, the guide plate is made of a high temperature resistant and non-conductive material.
In a preferred embodiment of the present invention, one end of the mixing and conveying pipeline close to the circumferential nozzle is communicated with a high pressure pipeline for providing high pressure gas, and the high pressure gas is used for auxiliary conveying, so that the movement speed of the mixed abrasive can be further accelerated.
In a preferred aspect of the present invention, the fixed connection structure includes a first support frame; the clamping mechanism is arranged on a workbench, and the workbench is arranged on the first support frame.
Preferably, a lifting adjusting structure is arranged between the workbench and the first support frame and comprises a rotating hand wheel, an adjusting screw rod is arranged on the rotating hand wheel, and the adjusting screw rod abuts against the workbench after penetrating through a threaded hole in the first support frame. Through the structure, the height of the workbench can be adjusted, and the bearing outer ring is convenient to clamp.
Further, still be equipped with vertical guide structure between workstation and the first support frame, this vertical guide structure includes guide post and guiding hole, the guide post sets up on first support frame, the guiding hole sets up on the workstation.
Preferably, the center of the workbench is provided with a blanking round hole, and the diameter size of the blanking round hole is 10% -20% smaller than that of the raceway of the bearing outer ring, so that the processed mixed abrasive is not accumulated near the raceway, and the bearing outer ring is prevented from falling downwards.
In a preferred embodiment of the present invention, the clamping mechanism includes a clamp for pressing the bearing outer ring against the workbench, and the clamp is fixed on the workbench through a threaded structure.
In a preferred embodiment of the present invention, a flow dividing top pillar is disposed in the inner cavity of the circumferential nozzle, and the top of the flow dividing top pillar is conical and extends into the feeding channel of the feeding end.
Preferably, the split flow top column is made of boron carbide material, and boron carbide has high hardness and high strength, so that the boron carbide can be blocked before the high-speed grinding material is mixed, and then split.
In a preferred embodiment of the present invention, the top of the feeding end is connected to the mixing and conveying pipe through a rotary bearing, so that the circumferential nozzle can rotate relative to the mixing and conveying pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. different from the traditional high-pressure gas conveying mode, the reinforced grinding equipment adopts a pushing mode directly acting on the mixed grinding material, namely, the mixed grinding material is directly pushed in the spraying direction by high-speed and high-pressure pushing force, so that the capacity loss in the conveying process can be reduced, and the processing quality of a raceway of a bearing outer ring can be effectively ensured.
2. In the conveying process, the mixed conveying pipeline is directly pushed forwards, so that the phenomenon of pipeline blockage can be effectively reduced.
3. The jet mechanism capable of carrying out circumferential jet is arranged in the bearing outer ring, so that the strengthening processing of the raceway of the bearing outer ring is realized, and particularly, the small or miniature bearing outer ring is realized, so that the raceway of the bearing outer ring can also obtain a strengthened grinding layer, and the mechanical property and the service life of the bearing are further improved.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the reinforced grinding device for machining the raceway of the outer ring of the bearing in the invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is a schematic perspective view of the strengthening mechanism of the present invention.
FIG. 4 is a cross-sectional view of the circumferential spray head and diverter plug of the present invention.
Fig. 5 is a front view of the peripheral spray head of the present invention.
Fig. 6 is a cross-sectional view taken along the line B-B in fig. 5.
Fig. 7 is a front view of the hybrid mechanism of the present invention.
Fig. 8 is a schematic perspective view of the hybrid mechanism according to the present invention.
FIG. 9 is a schematic structural diagram of another embodiment of the intensified abrasive apparatus for machining the raceway of the outer ring of the bearing in accordance with the present invention.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1, the reinforced grinding apparatus for processing a raceway of a bearing outer ring in the embodiment includes a reinforced processing module, a circulating feeding module, and a separation and recovery module, where the separation and recovery module includes a cleaning and separation module for classifying and recovering mixed abrasives and a drying module for drying classified steel balls.
Referring to fig. 1-6, the reinforced processing module comprises a mixing hopper 1, a processing box body 2 and a reinforced processing mechanism, wherein the reinforced processing mechanism is arranged in the processing box body 2 through a fixed connection structure; the reinforced machining mechanism comprises a clamping mechanism for clamping and fixing the bearing outer ring a and a circumferential injection mechanism for injecting mixed abrasive to a roller path of the bearing outer ring a, and the circumferential injection mechanism comprises a circumferential nozzle 3 and a rotary driving mechanism for driving the circumferential nozzle 3 to rotate; the circumferential nozzle 3 comprises a feeding end 3-1 and a distributing end 3-2, and the distributing end 3-2 is arranged in the center of the clamped bearing outer ring a; the inner cavity of the feeding end 3-1 forms a feeding channel 3-1-1, one end of the feeding channel 3-1-1 is communicated with the tail end of the mixing and conveying pipeline 5, and the other end is communicated with the material distributing end 3-2; a plurality of spraying channels 3-2-1 arranged along the circumferential direction are arranged in the distributing end 3-2, each spraying channel 3-2-1 comprises a direct current part and a rotating part, the direct current part is communicated between the feeding channel 3-1-1 and the rotating part, the rotating part extends outwards and deflects along the circumferential direction, and the plurality of rotating parts form the rotary driving mechanism; specifically, in the present embodiment, the number of the ejection channels 3-2-1 is not less than four.
Referring to fig. 7-8, the circulating feeding module comprises a mixing and conveying pipeline 5 and a mixing power mechanism 6, wherein one end of the mixing and conveying pipeline 5 is connected to the bottom of the processing box body 2, and the other end of the mixing and conveying pipeline is communicated with a feeding channel 3-1-1 of the circumferential spray head 3; the hybrid power mechanism 6 is arranged at one end of the hybrid conveying pipeline 5 close to the bottom of the processing box body 2; the mixing power mechanism 6 comprises a feeding pipeline 6-1, a feeding hopper 6-2, a discharging pipeline 6-3, two high-pressure pumping cylinders and a switching driving mechanism for driving the discharging pipeline 6-3 to be alternately communicated with the two high-pressure pumping cylinders, the high-pressure pumping cylinders comprise a material storage cylinder body 6-4 for temporarily storing mixed abrasive and a pushing hydraulic cylinder 6-5 for pushing the mixed abrasive in the material storage cylinder body 6-4 out at a high speed, the tail ends of the material storage cylinder bodies 6-4 extend into the feeding hopper 6-2, one end of the feeding pipeline 6-1 is communicated with the mixing conveying pipeline 5, and the other end of the feeding pipeline 6-1 extends into the feeding hopper 6-2; one end of the discharge pipeline 6-3 extends into the feed hopper 6-2, and the other end is communicated with the mixing and conveying pipeline 5; the pushing piston of the pushing hydraulic cylinder 6-5 extends into the inner cavity of the material storage cylinder 6-4 and is matched with the inner cavity wall of the material storage cylinder 6-4. Specifically, the two material storage cylinder bodies 6-4 are arranged in parallel and extend into the feeding hopper 6-2, the switching driving mechanism drives the discharging pipeline 6-3 to rotate, and the discharging ports of the two material storage cylinder bodies 6-4 are switched back and forth; the switching driving mechanism can adopt a structure which can realize automatic pipeline switching in the prior art.
Referring to fig. 1, the cleaning and separating module comprises a separating mechanism and a separating mechanism, wherein the separating mechanism comprises a separating box body 7 and a plurality of separating plates 8 which are arranged in the separating box body 7 in a downward inclined mode, and the plurality of separating plates 8 are arranged on two opposite inner walls of the separating box body 7 in an up-and-down staggered mode; the head end of the separation plate is fixedly connected to the inner wall of the separation box body, and the tail end of the separation plate obliquely extends downwards to a position exceeding the vertical central line of the separation box body; the position of the intersection point of the tail end extension line of the upper separation plate and the inner wall of the separation box body is higher than the position of the connection point of the head end of the lower adjacent separation plate and the inner wall of the separation box body; the separation box body 7 is arranged below the processing box body 2, the top of the separation box body is provided with a recovery pipeline 10 communicated with an opening at the bottom of the processing box body 2 and a cleaning pipeline 9 used for introducing cleaning liquid, and the bottom of the separation box body is provided with a discharge hole; a recovery switch is arranged on the recovery pipeline 10; the separation mechanism comprises a separation box body 11 and a separation screen 12, the separation box body 11 is arranged below the discharge hole, and the separation screen 12 is obliquely arranged at the top of the separation box body 11; wherein the mesh size of the separating screen 12 is smaller than the size of steel balls in the mixed grinding material and larger than the size of grinding powder in the mixed grinding material. Through the structure, after accomplishing intensive processing, the mixed abrasive material is whole to be collected in the bottom of processing box 2, open the recovery switch of recovery pipeline 10, make mixed abrasive material fall to and break away from in the box 7, wherein, because a plurality of break away from 8 down the slope set up on two relative inner walls that break away from in the box 7, so mixed abrasive material can be in proper order from the relative crisscross setting break away from 8 on "jumping" whereabouts of board, here "the in-process of beating", the steel ball can strike on breaking away from 8 in proper order, steel ball self can constantly produce the vibration like this, thereby shake the abrasive powder of adhesion and fall. Not only here, because the position that the intersection point of the tail end extension line of the separation plate 8 that is located above and the inner wall of the separation box 7 is located is higher than the position of the connection point of the head end of the separation plate 8 that is located adjacent below and the inner wall of the separation box 7, and the tail end of the separation plate 8 extends obliquely downwards to a position that exceeds the vertical center line of the separation box 7, a sufficient rolling distance can be ensured on each separation plate 8, so that the steel balls can roll sufficiently, and from top to bottom, the steel balls roll down on a plurality of separation plates 8 in sequence, and in the process, the grinding powder can be gradually separated from the steel balls. Meanwhile, cleaning fluid is introduced into the cleaning pipeline 10 at the top of the separation box body 7 to clean the mixed abrasive falling from the separation box body 7, so that the separation of the steel balls and the abrasive powder is further accelerated; in addition, the separated ground powder can be washed from the separation plate 8 and then enter the separation box 11 through the meshes of the separation screen 12.
Referring to fig. 1, the drying module includes a drying coil 13 for introducing high-frequency current to dry the steel balls, a guide plate 14 for guiding the steel balls to move downwards, and a recycling box 15 for collecting the steel balls, wherein one end of the guide plate 14 extends to a steel ball discharging end of the cleaning and separating module, and the other end extends into the recycling box 15; the drying coil 13 is wound around the outside of the guide plate 14 in the extending direction of the guide plate 14. Through above-mentioned structure, not only can dry the steel ball fast, avoid the steel ball to rust, still have advantages such as simple structure. Further, the guide plate 14 is made of a high temperature resistant and electrically non-conductive material.
Referring to fig. 1, one end of the mixing and conveying pipe 5 close to the circumferential nozzle 3 is communicated with a high-pressure pipe 16 for providing high-pressure gas, and the movement speed of the mixed abrasive can be further accelerated by using the high-pressure gas for auxiliary conveying.
Referring to fig. 1-3, the fixed connection structure comprises a first support frame 17 and a second support frame 18, the clamping mechanism is arranged on a workbench 19, and the workbench 19 is arranged on the first support frame 17; the circumferential spray head 3 is rotatably connected to the second support frame 18.
Referring to fig. 1-3, a lifting adjusting structure is arranged between the workbench 19 and the first support frame 17, the lifting adjusting structure includes a rotating hand wheel 20, an adjusting screw is arranged on the rotating hand wheel 20, and the adjusting screw passes through a threaded hole in the first support frame 17 and then abuts against the workbench 19. Through the structure, the height of the workbench 19 can be adjusted, and the bearing outer ring a is convenient to clamp.
Further, a vertical guide structure is further arranged between the workbench 19 and the first support frame 17, the vertical guide structure comprises guide columns and guide holes, the guide columns are arranged on the first support frame 17, and the guide holes are formed in the workbench 19.
Specifically, the center of the workbench 19 is provided with a blanking circular hole, and the diameter size of the blanking circular hole is 10% -20% smaller than that of the raceway of the bearing outer ring a, so that the processed mixed abrasive is not accumulated near the raceway, and the bearing outer ring a is prevented from falling downwards.
Referring to fig. 1 to 3, the clamping mechanism includes a clamp 21 for pressing the bearing outer ring a against the worktable 19, and the clamp 21 is fixed on the worktable 19 by a thread structure. Specifically, the number of the clamps 21 is four, and may be three or five or more, and the clamps are arranged along the circumferential direction.
Referring to fig. 4, a diversion top pillar 22 is arranged in the inner cavity of the circumferential nozzle 3, and the top of the diversion top pillar 22 is conical and extends into the feeding channel 3-1-1 of the feeding end 3-1. Further, the split flow top pillar 22 is made of a boron carbide material, which has high hardness and high strength, so that it can be split before mixing the abrasives at a high speed.
In this embodiment, the top of the feeding end 3-1 is connected to the mixing and conveying pipe 5 through a rotating bearing, so that the circumferential nozzle 3 can rotate relative to the mixing and conveying pipe 5.
Referring to fig. 1 to 8, the working principle of the intensified abrasive apparatus in the present embodiment is:
when the device works, the bearing outer ring a is fixed through the clamping mechanism, so that the bearing outer ring a is positioned on the outer side of the material distribution end 3-2 of the circumferential sprayer 3, and the outer ring roller path of the bearing outer ring a faces the outlet of the injection channel 3-2-1 of the material distribution end 3-2; putting the mixed abrasive (steel balls and abrasive powder) on a mixing hopper 1, and opening a switch of the mixing hopper 1 to enable the mixed abrasive to fall to the bottom of a processing box body 2; the mixing power mechanism 6 is then started to rapidly deliver the mixed abrasive to the circumferential nozzles 3. After the high-speed mixed abrasive is sent to the circumferential sprayer 3, the high-speed mixed abrasive is shunted to the plurality of spraying channels 3-2-1 of the material distribution end 3-2 through the material inlet channel 3-1-1 and then is sprayed out from the plurality of spraying channels 3-2-1 with different directions respectively, and the bearing outer ring a is positioned at the outer side of the material distribution end 3-2 of the circumferential sprayer 3, so that the mixed abrasive sprayed at the high speed by each spraying channel 3-2-1 can impact the raceway of the bearing outer ring a. Meanwhile, the spraying channel 3-2-1 is provided with the rotating part which extends outwards and is inclined along the circumferential direction, so when mixed abrasive enters the rotating part through the direct current part of the spraying channel 3-2-1, the mixed abrasive can push the distributing end 3-2 to rotate along the opposite circumferential direction of the inclination of the rotating part, the rotation of the circumferential spray head 3 is realized, the mixed abrasive sprayed in the original fixed direction can be swept for 360 degrees along the circumferential direction, and the processing effect of the raceway of the bearing outer ring a can be more uniform.
In the process, after the hybrid power mechanism 6 is started, the discharge pipeline 6-3 is communicated with one high-pressure pumping cylinder, the pushing piston in the material storage cylinder 6-4 in the other high-pressure pumping cylinder moves in the opposite direction of pushing, and the mixed abrasive is sucked into the material storage cylinder 6-4 through the material inlet pipeline 6-1. When the material storage cylinder 6-4 is filled with the mixed abrasive, the switching driving mechanism drives the discharge pipeline 6-3 to be communicated with the material storage cylinder 6-4, the pushing piston rapidly pushes the mixed abrasive in the material storage cylinder 6-4 out under the driving of the pushing hydraulic cylinder 6-5, so that the mixed abrasive obtains huge kinetic energy, can move forwards along the mixed conveying pipeline 5 at a high speed and is ejected out from the circumferential nozzle 3 to violently impact on the raceway of the bearing, the surface of the raceway of the bearing obtains larger residual compressive stress, and the mechanical performance and the service life of the bearing are favorably improved. Meanwhile, the feeding port of the other material storage cylinder 6-4 is opened in the feeding hopper 6-2, the pushing piston in the material storage cylinder 6-4 moves in the opposite direction of pushing, and mixed abrasive is filled into the other material storage cylinder 6-4 to be ready for feeding. The two high-pressure pumping cylinders alternately and alternately push the mixed abrasive forward along with the continuous switching of the discharge pipelines 6-3, so that high-pressure and continuous jet flows are formed, and the mixed abrasive is continuously and circularly conveyed until the strengthening processing is finished.
Example 2
Referring to fig. 9, unlike embodiment 1, the injection passage in this embodiment does not include a rotating portion, and the rotary drive mechanism includes a rotary drive motor 4 for driving the circumferential spray head 3 to rotate, and the rotary drive motor 4 is fixedly provided on the second support frame 18. Specifically, the rotary driving motor 4 is connected to the circumferential nozzles 3 through a synchronous belt structure, and other structures can be adopted for rotary driving.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. The reinforced grinding equipment for processing the bearing outer ring raceway is characterized by comprising a reinforced processing module and a circulating feeding module, wherein the reinforced processing module comprises a mixing hopper, a processing box body and a reinforced processing mechanism, and the mixing hopper is arranged on and communicated with one side of the processing box body; the strengthening processing mechanism is arranged in the processing box body through a fixed connecting structure;
the reinforced machining mechanism comprises a clamping mechanism for clamping and fixing the bearing outer ring and a circumferential spraying mechanism for spraying mixed abrasive to a raceway of the bearing outer ring, the circumferential spraying mechanism comprises a circumferential sprayer, the circumferential sprayer comprises a feeding end and a distributing end, and the distributing end is arranged in the center of the clamped bearing outer ring; the inner cavity of the feeding end forms a feeding channel, one end of the feeding channel is communicated with the tail end of the circulating feeding module, and the other end of the feeding channel is communicated with the material distributing end; the inner part of the distributing end is provided with a plurality of spraying channels which are arranged along the circumferential direction, each spraying channel comprises a direct current part and a rotating part, the direct current parts are communicated between the feeding channels and the rotating parts, and the rotating parts incline along the circumferential direction while extending outwards;
the circular feeding module comprises a mixing conveying pipeline and a mixing power mechanism, one end of the mixing conveying pipeline is connected to the bottom of the processing box body, and the other end of the mixing conveying pipeline is communicated with a feeding channel of the circumferential spray head; the hybrid power mechanism is arranged at one end of the hybrid conveying pipeline close to the bottom of the processing box body; the high-pressure pumping cylinders comprise a material storage cylinder body for temporarily storing mixed abrasive and a pushing hydraulic cylinder for pushing the mixed abrasive in the material storage cylinder body out at high speed, the tail end of the material storage cylinder body extends into the feeding hopper, one end of the feeding pipeline is communicated with the mixing and conveying pipeline, and the other end of the feeding pipeline extends into the feeding hopper; one end of the discharge pipeline extends into the feeding hopper, and the other end of the discharge pipeline is communicated with the mixing and conveying pipeline; and a pushing piston of the pushing hydraulic cylinder extends into an inner cavity of the material storage cylinder body and is matched with the wall of the inner cavity of the material storage cylinder body.
2. The reinforced grinding equipment for processing the bearing outer ring raceway as claimed in claim 1, further comprising a separation and recovery module, wherein the separation and recovery module comprises a cleaning and separation module for classifying and recovering the mixed abrasives and a drying module for drying the classified steel balls.
3. The reinforced grinding equipment for machining the bearing outer ring raceway as claimed in claim 2, wherein the cleaning and separating module comprises a disengaging mechanism and a separating mechanism, the disengaging mechanism comprises a disengaging box and a plurality of disengaging plates arranged in the disengaging box, and the plurality of disengaging plates are arranged on two opposite inner walls of the disengaging box in an up-and-down staggered manner; the head end of the separation plate is fixedly connected to the inner wall of the separation box body, and the tail end of the separation plate obliquely extends downwards to a position exceeding the vertical central line of the separation box body; the position of the intersection point of the tail end extension line of the upper separation plate and the inner wall of the separation box body is higher than the position of the connection point of the head end of the lower adjacent separation plate and the inner wall of the separation box body; the separation box body is arranged below the processing box body, the top of the separation box body is provided with a recovery pipeline communicated with an opening at the bottom of the processing box body and a cleaning pipeline used for introducing cleaning liquid, and the bottom of the separation box body is provided with a discharge hole; a recovery switch is arranged on the recovery pipeline;
the separation mechanism comprises a separation box body and a separation screen, the separation box body is arranged below the discharge port, and the separation screen is obliquely arranged at the top of the separation box body; wherein the mesh size of the separation screen is smaller than the size of steel balls in the mixed grinding material and larger than the size of grinding powder in the mixed grinding material.
4. The reinforced grinding equipment for processing the bearing outer ring raceway as claimed in claim 2, wherein the drying module comprises a drying coil for passing high-frequency current to dry the steel balls, a guide plate for guiding the steel balls to move downwards and a recovery box for collecting the steel balls, one end of the guide plate extends to a steel ball discharging end of the cleaning and separating module, and the other end of the guide plate extends into the recovery box; the drying coil is surrounded on the outer side of the guide plate along the extending direction of the guide plate; the guide plate is made of a high-temperature-resistant and electrically non-conductive material.
5. The reinforced grinding equipment for processing the bearing outer ring raceway according to any one of claims 1 to 4, wherein one end of the mixing and conveying pipeline close to the circumferential spray head is communicated with a high-pressure pipeline for providing high-pressure gas.
6. The apparatus of any one of claims 1 to 4, wherein the fixed connection structure comprises a first support frame; the clamping mechanism is arranged on a workbench, and the workbench is arranged on the first support frame.
7. The reinforced grinding equipment for processing the bearing outer ring raceway as claimed in claim 6, wherein a lifting adjusting structure is provided between the table and the first support frame, the lifting adjusting structure includes a rotating hand wheel, an adjusting screw is provided on the rotating hand wheel, and the adjusting screw passes through a threaded hole on the first support frame and then abuts against the table.
8. The reinforced grinding equipment for processing the bearing outer ring raceway as claimed in claim 6, wherein the center of the worktable is provided with a circular blanking hole having a diameter size 10% -20% smaller than that of the bearing outer ring raceway.
9. The reinforced grinding device for machining the bearing outer ring raceway as claimed in claim 6, wherein the clamping mechanism comprises a clamp for pressing the bearing outer ring against the table, the clamp being fixed to the table by a threaded structure.
10. The apparatus of claim 1, wherein a split-flow pin made of boron carbide material is disposed in the inner cavity of the circumferential nozzle, and the split-flow pin has a conical top and extends into the feed channel at the feed end.
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| CN201911109528.1A CN110815063A (en) | 2019-11-12 | 2019-11-12 | Reinforced grinding equipment for processing bearing outer ring raceway |
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| CN201911109528.1A CN110815063A (en) | 2019-11-12 | 2019-11-12 | Reinforced grinding equipment for processing bearing outer ring raceway |
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Application publication date: 20200221 |